What is the two-fold message of evangelism according to the sermon?

The sermon outlines the two-fold message of evangelism derived from Isaiah 40:6-9. The first part emphasizes the transitory nature of humanity—'all flesh is grass'—which serves to humble and remind believers of their need for divine help. The second part, 'behold your God,' encourages believers to look upon God with faith, recognizing His sovereignty and grace. This dual message helps Christians understand their lowly position while also inviting them to trust in a powerful and loving God who saves.